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Development and characterization of Yb-Er laser glass for high average power laser diode pumping
Authors:G Karlsson  F Laurell  J Tellefsen  B Denker  B Galagan  V Osiko  S Sverchkov
Institution:(1) Department of Physics, Royal Institute of Technology, 106 91, Stockholm, Sweden, SE;(2) General Physics Institute, Laser Materials and Technology Research Center Russian Academy of Sciences, 119991 Moscow, Russia, RU
Abstract:A new strong erbium laser glass (SELG) based on a boro-alumo-phosphate composition is reported. We discuss the synthesis and chemical properties together with spectroscopic and thermo-mechanical data. The new glass composition shows excellent laser performance and withstands high-average power pump radiation. We present laser results at 1.54 μm from flashlamp and laser pumping. In tests with laser-diode pumped Q-switched Er-Yb microchip lasers, we have achieved up to 150 mW of average output power and generated 1.2 kW in peak power. Co2+:MgAl2O4 was here used as the saturable absorber. Received: 21 December 2001 / Revised version: 14 April 2002 / Published online: 8 August 2002
Keywords:PACS: 42  70  Jk  42  70  Ce  42  60  Gd
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